Electrical control system.



E. SCHNEIDER;

ElEC'TRICAL CONTROL SYSTEM.

APPLICAIiON FILED JAN.20, 1915.

1,200,656. Patented Uct.10,191fi 4 sun s-such a.

E. SCHNEIDER.

ELECTRICAL CONTROL 'SYSTHII.

APPLICATION mp0 man. 1915.

Patented Oct. 10, 1916.

4 SHEETS-SHEET 2.

L F a o I E'P E. SCHNEIDER. ELECTRiCAL CONTROL SYSTEM.

APPLICAYION FILED MN 20, 1915- 1 200,656. Patented Oct. 10, 1916.

4 SHEETS-SHEET 3- E. SCHNEiDER. ELECTRICAL CONTROL SYSTEM. APPLICATIDN mm m. 20. ms.

1,200,656. Patented 0.... 10, 1916.

4 SHEETS-SHEY 4.

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EUGEFE sonnnznnn, or LE onsn'zo'r, FRANCE.

ELECTRICAL CGIITBOL SYSTEM.

Specification of Letters Patent.

Patented Oct. 10, 1916.

Application med January 20, 1915. Serial No..8,316.

T 0 all whom itmay concern:

Be it known that I, Euonun Sonnnrnnn, citizen of the Republic of France, residing at Le (jreuzot, Saone-et-Loire France, have invented a new and useful Electrical Con" trol System, which is fully set forth in the following specification. The present invention has for its ob ect device for the electrical control at a distance of guns or other mechanisms and applies to installations comprising at the Various receiring stations, for each mechanism to be. actuated, two motors rotating in a continuous manner in opposite directions and acting upon one. and the some differential apparatus thereby controlling the mechanism; consequently when the two motors run synchronously themcchanism to heopcrated at a distance stops, while its displacements are obtained by variationsin the speed of one of the motors. In these installations the transmitting-station also comprises a. con

trol mechanisnr governed by a difi'ercntial connected with two motors running in opposite directions as the motors of the control 'mechanisnr are electrically connected with & chronous running of the motors at these stetions during the periods of stoppage of the mechanisms to be operated. it is necessary to provide means for feeding themotors with'altcrnnting current. Hitherto it has .been usual, with this object, to supply the i motors connected with the source of supply.

These installations, howev present the iu converue-nce of necessitating at the transmit ting station a minimum group eisix dynamo electric machines; the station COIl'l prises in addition-to the group of two motors for operating the. indicating mechanism, two machines for generating alternating current and two continuous. current motors connected with the source and operating the generating machines.

In accordance with the present invention a considerable simplification is introduced into the installation of the transmitting station. The group of the two dynurnos for generating alternating current ancLof their operating motors is dispensed with" in the following manner :'The two motors for operating the various receiving stations, like the two motors of the indicating mechanism arranged at the transmitting stzition, are constructed as rotary converters whose field magnets are all and constantly supplied di-. rectly by continuous current froth -the source of supply. The directconnection between the source of continuous current ,nndthe groups, of two motors-(constructed as; converters) of the \'nr1ous recehung stations, permits of reducmgto two the number of dynamos atthe transmitting station. These latter machines constructedins"convertersat the same timeserve us motors for-the controlineclunnsm and as generatorsof'alternating current for the supply'of the convcrters of the receiving stations, which act as synchronous motors. These tWo-d'ynamos of the transmitting station are however, supplied exclusively with continuous current coming from' the source ofsupply. During the periods of stoppnge'fof the mechanisms to be controlled, it therefore be comes necessary to'obtain synchronism between them. In accordancewith the inrention this result is obtained by automatically esta'nlishini; during the periods of stoppage, a connection between the-collector rings -of the d ynnmos, in such a manner as "to cause the current generated by the two machines to be supplied through oneand the same group of conductors. The communication is automatically esta'blished at the moment at which the usual distant control rheostat occupies the positon which corresponds with the stoppage of: the mechanisms to be'controlled.

An tinted dingra:nrnaticillly in the accompanying-drzuvings, in which Figure l a diagrammatic representation of the apparatus and electrical connections .wd inent of the invention is illusof n transmitting station and a receiving station; Figs 2, 3 and e show, respectively,

a front elevation, side elevation, and plan oi gr constructional former the operating rhcostat N m, connected with the switch .Figf is-c diagrammatic representation of the circuits including the indicators and an interlocked switch; Fig. 6 is a detailed diagrammatic representation of-the indicator parts shown in Fig; and Fig. 7 is a dctailed view of tlle'locking means mounted on the interlocked switch..

Theiight-hand portion of Fig. 1 represents the transmitting station; the left hand portion represents oneof the various receiving stations. v

A designates a shaft at the receiving station to be controlled from a distance and connected, by the intermediai y of a suitable transmission a a a a; with the planet pinions b ota diil'erential B whosc sun wheels bb v are; reipectively controlled by two dyneinos C The .;tra.u$m1tt1ng station compnm an infdicutingg nechanism A. ,f ormected similarly by a, transmission to a. difierentiel B whose sun wheels are'fcontroll by-the two dynamos E,- B respectively.

switch H. branched the various conductors terminating at the variohs field magnets c (l of the groups of dynoinos estahlished'atthe receiving stationsfsnd at the field magnets c f of Gris-the sourccof-continuous current. The two feed conductors g, greceive the current from this source by the. intermediary of a From these conductors are 7 z-the dynamos of the transmitting station.

In'eccordance with the invention, the dynnm$ C, D like the dylnamos E, F,

are constructed as converters, with this difference, however, that the dynamos C D of the receiving station act as motors while the machines E F at the transmitting station act as generators. They serve motors for operating the control indicator mechanism A while they generate the alternating current intended to supply the various converters C D of th receiving stations In the example illustrated, it has been assumed that the converters are arranged for' 1,2oo,eee

of converter F. sible to supply continuous current coming from the source of supply to the armatures of the dynamos C, D and to those of the dynemos E, F. l'Vhen this switch supplies continuous current to the armatures of the dynamos C, D, by means of the arm J it interrupts the connection between the A switch I renders it posgroups of rings f f? f of the transmitting station; the lever-i for actuating the support'common to the'arms I and J is mechanically connected with a support kfor actuating the arms K of a second switch which establishes or interrupts the connection between the rings '6' e e of the transmitting station and. the rings 0', 0 and 0 of the various receiving. station.

M'm is a starting rhe'ostat permitting of distributing the continuous current to the .armotures of all the dynamos of the installation.

N n is-en operating'rheos'tat which, in accordance with the invention, is mechanically connected as, shown in F igs. 2, 3 and 4; with a switch 0 intendedto automatically interrupt,- or establish an electrical'comiection be- In Figs. *2,

carries at its extremity opposite the operat ing handle a, roller 3 'n 'pwhic-h, when thehand lever n of the rheostat 35 ween the groupv of rings g 2 3 and the group f f f. v

lever reaches .the stopping position,ypresses aside the support P-ofthe levers by" acting upon the stop 1? carried-by the support. This stop comprises two inclined profiles on either side of a stop notch er. the roller. It will be noted that in thep'ositioncorresponding to the stoppage of the mechanisms to be controlled, the lever n causes the support P and the three arms 0 to rock and brings their extremities into contact with the contacts 0 in extending the counterspring of which in all the operative positions of the rheostat retains the arms 0 in the position indicated in brokenlines corresponding. to

interruption of the circuit establishingcon nection between the collector rings e c cff and the rings f f". x

The installation described operates in the following manner:The switches I, J, h

occupying the position indicated in Fig. 1, r

if the switch H be operated-the continuous current is distributed to the field magnets e, f of the transmitting station and to the field magnets c, d of the various receiving stations. By operating the rheostat M-m the ermatures of the converters, E, F are supplied with continuous current as are also the ermetures of the converters C, D of the various receiving stations. As a result all the converters of the installation are started as continuous current motors.

Now if the switch members I be in open position, the supply of continuous current to n, the armature-s of the dynamos C, D is interacterist ics.

. current which supply the converters of the various receiving stations.

Consequently synchronism is obtained between C and D so long as the alternating current furnished by E is identical with the alternating current furnished by F. This synchronlsmisonly necessary during the periods of stoppage of the mechanisms A and A". During these periods the rheostat Nn occupies the position of repose indicated in full lines in- Fin. 1, and in the detail in Figs. 2, 3 and 4, the switch O taking the position shown in full lines. The two motor-dynamos E, F having their rings connected one with the other, their synchronism is established in known manner.

.VVhen it is desired toactuat e the mechanisms A at speeds that can hemoditied'as desired, the rheostat Nanis operated by displacing it to the right or to the left according to the direction of running to be obtained, the extent ofthe displacement dc pending upon the speed with which it desired to produce'the movements. The discurrent through the motongenerators as described celowl In the pofl ion indicated in Fig. 1, the switches l, J, K are maintained locked by the spring-pressed armature q of an electro magnet Q (Fig. 7).- The release of this locking device is only possible under the action of the coil Q. when the winding of the latter is energized by a passage of cur-- rent,-which takes place only at the moment at which all the elements A, A and A to be operated have stopped at the common initial position. Mounted Y on revoluble shafts A, A, and on the shaft of the indicating mechanism A are arms 1. Each of these arms is provided with a spring contact 2, as shown in Fig. 6, adapted to engage a contact R, when the arm carrying the spring contact moves into a predetermined position, and to close a circuit through coil Q including in series the spring contacts and the stationary contacts R to R. In order that arms 1, initially rotatedb'y the direct current supplied to motor generators C; D, E, F, may stop when the spring contacts reach the stationary contacts, a spring stop T 15, Fig. 6, is provided for each of these arms consisting of astop member T normally held in the path ofthe rotating arm 1 by an elcctro magnet S against the retractile force of a spring 2 The .coil of the magnet S is energized by direct current placement of N-m, serves to interrupt by of switch I. When each of the arms 1 has the switch 0, the circuit establishing the connection between 6 e e and f f 7. The rheo stat Nn being placed upon the circuit of the field magnet f, the movements of this rheostat produce variations of speed of the converter F which result in corresponding variations of the speeds of the converters D. The mechanisms A and A therefore execute identical displacements and in the same direction at the speeds selected.

In order to ssure departure from a common initial p sition for all the mechanisms to be controlled, it essential to be able, when starting, to return the various mechanisms, which may occupy various positions, to this initial position. Advantage is taken of the fact that chntinuous current motors, as usually desi ned, possess difierent char- Direct current is supplied to the motor-genwators C, D, E and F when switches H, M and I are closed. Owing to the lack of SFQClTI'ODlSIn in these motors, the} cause the differential mecl'ianisms to drive the mechanisms to be controlled and move them into the predetermined starting positio By aid of electromagnetically controlled locking means for the switches I, J. 15 adapted to he released when the initial positions reached, the. various jineehanisms may he started from this posis iion by establishing a circuit for alternating moved into engagement with its respective stop T, the spring contact 2,,carr'1ed'hy each arm, rests omits respective stationary consprings t are able to press the stops. T aside.

The simultaneous closing of the switches J. K connects the alternating current side of the motor generators at the transmitting station with those at the receiving stations. The machines will now start from a common initial positionand can be controlled by switch N-n as described.

hat I claim and desire to secure by Letters Patent of the United States is i. In a control system, rotary-converters mechanicallv connect-ed by a compensating device, a Hi H'ublQ member associated with said device, other rotary converters mechanically connected by a compensating (lerice and electrically connected to said firstnamed converters, a s cond n'ui ahle member associated with said second compensating device, .and means associated with the first-named converters for controlling said second movable member.

2. In a control system, rotary converters mechanically connected by a compensating device, a movable member associated with said device, other rotary converters me-' chanically connected by a compensating de vice andelectrically connected to said firstnamed converters, a second movable memher associated with said. -second compensating device, and means controlling the field of one of said first-named converters which,

through said electrical and mechanical. ap-

paratus moves said secondmovable member, 3. In a control system, rotary converters mechanically connected by a compensating device, a movable'member associated with said device, other rotaryconverters mechanically connected bya compensating device and electrically connected to said firstnamed converters, a second movable member associated with said second compensat ing device, and control means associated with one oisaid first-named converters for varying the speed thereof thereby causing. simultaneous movementof said] movable members.

4. In a control system, a revolubl'e member rotary converters difierentially connect'edfor driving the same, a second revo" vertersa luble member, remotely situated rotary converters differentially connectedfor driving said second member, electrical connections between the alternating current sides of said converters, a direct. current supply for all of said converters, and means for simultaneously cutting out the direct current supply to the remotely situatedijconverters and for coamecting .thesamew'ith the altepf sides of the firstmanied'con;

nating' current 5. In an electric control system, a plu ral'i'ty 'of motor generators having direct current sides. and alternating current sides, compensating means connecting said imachines in pairs, one of said pairs constituting a driving pair for the other pairs, de-

vices to be controlled operatively connected to said compensating means, field windings for said machines connected in parallel with a source of direct"current, circults cqnviccsto be controlled operatively connected to said compensatmg means, field windings for said machines connected in paraliel with a source of direct current, circuits connectmg the alternate current sides of the driving pair with similar sides ofthe other mas chines, other circuits connecting the direct current sides of the machines with a source of current, switching means for opening one of said last-named circuits and closing the alternating current circuits, and means in the field circuit of one of the driving machines for controlling the movement of said devices. 3

7. In. an electric control system, a plurality of motor generators, having direct current sides and alternating current sides, compensating means connecting said mar. chines in pairs, one of said pairs constituting a driving pair for the other pairs, dc.- vices to be controlled operativcly connected to said compensating means, field wim'lingsv for said machines connected in psrallci" with a source of direct current, circuits con necting the alternate current sides of the .drivingpair with similar sides of the other machines, other circuits connecting the direct current sides of the machines with a source of current, switching means for opening one of said iast-named circuits and closing the alternating current circuits,

means in the field circuit of one of the driving machines for controllingjthe movement of sald'devices, and switching means oper- HtlYBly connected to said last-named means for closing a path between said alternatingcurrent circuits for synchronizing said mavices.

-8. -'ln a, control system; a plurality of motor generators, compensating means connecting said machines in pairs, and contact arms "operatively connected to said--means, circuits connecting said motor generators and a source of current, switching means in said circuits-provided with locking means, and electromagnetic means in a circuit controlled throughsaid contact arms"f o r an locking said locking means.

chines and stopping movement of said demotor generators, compensating means connecting said machines-in pairs, and contact .armsoperatively coon ted to said means, circuit connecting. said otor generators and a source'of-curren v lashing means in said circuits provided with locking means,

electromagnetic means in circuit ccntrolled through said contact farms forunlocking said locking means, electromagnetic stop means lofsaid arms, and circuits for energizing the same controlled by said switching'means;

10. In a control system, sets of dynamo electric machines, each set connected through a compensating device to a movable member,

9. In a control system, a plurality of iCIO indicators operated by said movable memsituated dynamo electric machines adapted to be'driven by said-first-named machines,

f said-second-named machines being mechanically'connected by a differential gearing, and indicators associated with saidditfer- -ential gearings and movable in' response to relative variation-in speeds of said machines.

' l2. In a control system, a. movable member, dynamo electric machines differentially connected to said movable member, means for driving said machines, a second movable member, a second set of dynamo electric machines connected to said second movable .member by aditlerential device, electrical connections between said first-named and said second-named machines for driving the latter,- other means for driving said second set of machines when not driven by said first machines, and means associated with said first-named machines for controlling the latter and thereby the movement of said movable members.

13. In a control systenndynamo electric machines in a cent-ral st ation normallydriven at constant speed, a movable member provided with an indicator connected to said" machine through a compensating device, like apparatus in a sub-statiomswitchmg means for electrically connecting the machines in the central station with the machines in thc sub-station, and controlling means for relatively varying the speeds of the machines in' the central station thereby cansin the muvcmcnt of the movable memher in the sub-station and for electrically connect-mg thc machines in the central station with each other when their speeds are substantially equal.

14. In a control system, setsof dynamo electric machines, said sets being adapted'to be electrically connected, a source of current supply for each set, and control means act-- ing through one of said sets for controlling another of said sets, and for electrically connecting together the machines in one of said In testimony whereof I have signedthis specification inthc presence of two subscribi EUGENE SCHNEIDER.

\Vitnesses: 1

CHARLES CABORN,

Jonx J. ERNESTER. 

